# ATTINY814-SSNR

**Microchip Tech** · MICROCHIP · SOIC-14

ATTINY814-SSNR from Microchip Tech, in a SOIC-14. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VDD | power_in | Input supply voltage pin; the device operates from 1.8V to 5.5V per the ordering table. |
| 2 | PA4 | bidirectional | General purpose I/O pin PA4 with analog input AIN4, USART0 XDIR, SPI0 SS and TCA0 WO4 alternate functions. |
| 3 | PA5 | bidirectional | General purpose I/O pin PA5 with analog input AIN5, USART0 OUT, TCA0 WO5 and CCL alternate functions. |
| 4 | PA6 | bidirectional | General purpose I/O pin PA6 with analog input AIN6 and DAC output alternate function. |
| 5 | PA7 | bidirectional | General purpose I/O pin PA7 with analog input AIN7 and CCL LUT1-OUT alternate function. |
| 6 | PB3 | bidirectional | General purpose I/O pin PB3 that can alternatively serve as the TOSC1 32.768kHz crystal oscillator connection. |
| 7 | PB2 | bidirectional | General purpose I/O pin PB2 that can alternatively serve as the TOSC2 crystal oscillator connection and EVOUT1 event output. |
| 8 | PB1 | bidirectional | General purpose I/O pin PB1 with analog input AIN10 and USART0 XCK alternate functions. |
| 9 | PB0 | bidirectional | General purpose I/O pin PB0 with analog input AIN11 and USART0 XDIR alternate function. |
| 10 | PA0/RESET/UPDI | bidirectional | Pin PA0 that is configured by the RSTPINCFG fuse as GPIO, UPDI or RESET for programming and debug. |
| 11 | PA1 | bidirectional | General purpose I/O pin PA1 with analog input AIN1 and USART0 TXD, SPI0 MOSI and TWI0 SDA alternate functions. |
| 12 | PA2 | bidirectional | General purpose I/O pin PA2 with analog input AIN2 and USART0 RXD, SPI0 MISO and TWI0 SCL alternate functions. |
| 13 | PA3/EXTCLK | bidirectional | General purpose I/O pin PA3 that can alternatively serve as the external clock input EXTCLK. |
| 14 | GND | power_in | Ground reference pin for the device. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-14 |
| Category | Embedded Processors & Controllers |
| Pins | 14 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Power supply operational range |  | 1.8 |  | 5.5 | V | Power Supply Operational Range, ATtiny814-SSNR | 12 |
| Operational temperature range |  | -40 |  | 105 | °C | Industrial (-40°C to +105°C), ATtiny814-SSNR | 12 |
| Speed grade 0-20MHz |  | 0 |  | 20 | MHz | @ 4.5V, 5.5V | 2 |
| Speed grade 0-10MHz |  | 0 |  | 10 | MHz | @ 2.7V, 5.5V | 2 |
| Speed grade 0-5MHz |  | 0 |  | 5 | MHz | @ 1.8V, 5.5V | 2 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | configurations, including indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. | 382 |

## CAD (KiCad official)

- Symbol: `ATTINY814-SSNR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `attiny814-ssnr-etched.step` / `attiny814-ssnr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `attiny814-ssnr.step` / `attiny814-ssnr.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Microchip Tech datasheet](docs/attiny814-ssnr-datasheet.pdf) (497 pp, sha256 `0aeff7148ba82403`, retrieved 2026-10-27, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `off` (skipped (clean text read)), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/attiny814-ssnr-datasheet.pdf)